Language Learning

A space for working on projects & learning new stuff together. 💻☕️ Please RSVP if you intend to join, as we have limited space. 😊

Liebe Deutschlernende, Das nächste Sprachcafé findet am **24.04.** von **15:30 bis 17 Uhr statt.** Das Thema: Wird vor Ort bekannt gegeben. Wir freuen uns auf euch!

Join our in-person meetup on April 24th to hear talks from experts on cutting-edge topics across AI, ML, and computer vision. **[Register to reserve your seat.](https://voxel51.com/events/berlin-ai-ml-and-computer-vision-meetup-april-24-2026)** Space is limited! **Date, Time and Location** Apr 24, 2026 5:30 PM - 8:30 PM [MotionLab](https://motionlab.berlin/) Bouchéstraße 12/Halle 20 12435 Berlin **Kaputt: A Large-Scale Dataset for Visual Defect Detection** We present a novel large-scale dataset for defect detection in a logistics setting. Recent work on industrial anomaly detection has primarily focused on manufacturing scenarios with highly controlled poses and a limited number of object categories. Existing benchmarks like MVTec-AD (Bergmann et al., 2021) and VisA (Zou et al., 2022) have reached saturation, with state-of-the-art methods achieving up to 99.9% AUROC scores. In contrast to manufacturing, anomaly detection in retail logistics faces new challenges, particularly in the diversity and variability of object pose and appearance. Leading anomaly detection methods fall short when applied to this new setting. To bridge this gap, we introduce a new benchmark that overcomes the current limitations of existing datasets. With over 230,000 images (and more than 29,000 defective instances), it is 40 times larger than MVTec and contains more than 48,000 distinct objects. To validate the difficulty of the problem, we conduct an extensive evaluation of multiple state-of-the-art anomaly detection methods, demonstrating that they do not surpass 56.96% AUROC on our dataset. Further qualitative analysis confirms that existing methods struggle to leverage normal samples under heavy pose and appearance variation. With our large-scale dataset, we set a new benchmark and encourage future research towards solving this challenging problem in retail logistics anomaly detection. The dataset is available for download under [https://www.kaputt-dataset.com](https://www.kaputt-dataset.com). *About the Speaker* [Sebastian Höfer](https://www.linkedin.com/in/sebastian-h%C3%B6fer-891178121/) is an Applied Science Manager at Amazon Fulfillment Technologies & Robotics, leading machine learning and computer vision research for large-scale robotics and warehouse automation. He received his PhD from the Robotics & Biology Lab at TU Berlin, focusing on Sim2Real transfer and robotic perception. His recent work, “Kaputt: A Large-Scale Dataset for Visual Defect Detection” (ICCV 2025) [37], established a major benchmark for industrial anomaly detection, reflecting his expertise at the intersection of academic research and real-world deployment. **Data Foundations for Vision-Language-Action Models** Model architectures get the papers, but data decides whether robots actually work. This talk introduces VLAs from a data-centric perspective: what makes robot datasets fundamentally different from image classification or video understanding, how the field is organizing its data (Open X-Embodiment, LeRobot, RLDS), and what evaluation benchmarks actually measure. We'll examine the unique challenges such as temporal structure, proprioceptive signals, and heterogeneity in embodiment, and discuss why addressing them matters more than the next architectural innovation. *About the Speaker* [Harpreet Sahota](https://www.linkedin.com/in/harpreetsahota204/) is a hacker-in-residence and machine learning engineer with a passion for deep learning and generative AI. He’s got a deep interest in VLMs, Visual Agents, Document AI, and Physical AI. **Most AI Agents Are Broken. Let’s Fix That** AI agents are having a moment, but most of them are little more than fragile prototypes that break under pressure. Together, we’ll explore why so many agentic systems fail in practice, and how to fix that with real engineering principles. In this talk, you’ll learn how to build agents that are modular, observable, and ready for production. If you’re tired of shiny agent demos that don't deliver, this talk is your blueprint for building agents that actually work. *About the Speaker* [Bilge Yücel](https://www.linkedin.com/in/bilge-yucel/) is a Senior Developer Relations Engineer at deepset, helping developers build agentic AI apps with Haystack. Passionate about AI, she makes complex concepts approachable through hands-on tutorials, both online and at real-life events. **Operationalizing Computer Vision for Overhead Lines: Beyond the Demo** At first glance, visual inspection of high-voltage power lines seems straightforward: collect imagery, run one or two AI models, and report the findings. In practice, moving beyond a proof of concept reveals a range of issues that can make or break a campaign. Common concerns include data quality and coverage, scarcity of the most relevant cases and abundance everywhere else, variations in pylon geometry and asset types across regions, calibration and GIS alignment challenges, and a long tail of edge cases that emerge in real-world operations. This talk introduces Siemens Energy’s end-to-end overhead line inspection solution and shares key learnings from inspecting more than 10,000 km of power lines for real customers across several continents. We will show how raw 2D/3D data is transformed into structured information, delivering insights into asset inventory as well as defects, and supporting maintenance and planning decisions for critical infrastructure. The focus is on the combination of algorithmic building blocks and scalable processing, designed for robustness and consistency at scale, where even low error rates can become operationally significant. *About the Speaker* [Stefan Wakolbinger](https://www.linkedin.com/in/stefan-wakolbinger-aa0ba874/) is the Development Team Lead for AI & Analytics at SIEAERO, Siemens Energy's digital powerline inspection service. He leads the development of cutting-edge AI and analytics solutions that transform aerial powerline inspection through multi-sensor technology. His team creates digital twins of powerline infrastructure, automates fault detection, and monitors vegetation management—making powerline inspection safer, more precise, and more efficient. Stefan has been driving innovation in this role since September 2022. **Search your video library like a database** Drop in YouTube URLs or upload files and query content four ways: exact keyword matching, semantic search across transcripts, visual scene search via SigLIP2, and LLM-generated answers that synthesise across segments. [Paras Mehta](https://www.linkedin.com/in/pmehtaeu/) is a Berlin-based AI engineer and CTO/co-founder of Sylby, a language learning app he built from scratch, reaching 10,000 users and raising €350K. Previously: data scientist at Motionlogic, senior software engineer at Volkswagen, a PhD from Freie Universität Berlin, and a visiting stint at Cambridge. He now works as an AI engineer at HPI's AI Service Centre.

* German below -
Please bring clean indoor shoes with you to the location <3 The event fee varies between 5 to 10 Euros. 

Hey You!
On Friday I will teach you a few basic steps of shuffling. We will break down the steps, in your time, in your style.
We will explore your own flow of your body to different kinds of music and how we can use it in shuffling. I want to create a safe space for everyone who is just starting their shuffle journey or is already on the path. 

Address:
Milastraße 4
10437 Berlin
“Aziza-tanzt Tanzschule” 

Hallo Du!
Diesen Freitag möchte ich Dir ein paar Basic-Schritte vom Shufflen zeigen. Wir werden die Schritte langsam durchgehen, in deiner Zeit, in deinem Tempo.
Wir werden den eigenen Flow entdecken und wie Du deinen Körper zu verschiedner Musik im Shufflen integrieren kannst.
Ich möchte für jede Person einen Safe-Space erschaffen, egal ob Du ganz Neu bist oder schon etwas gelernt hast. 

Adresse:
Milastraße 4
10437 Berlin
“Aziza-tanzt Tanzschule”

Bang! Bang! Now in its ninth year of hilarity, Revolver is Berlin’s oldest, organic and homegrown English comedy show that happens at Wows.ville, a punk rock bar located in Kreuzberg. ***[Reserve a seat here](https://www.eventbrite.de/e/revolver-the-comedy-show-with-a-bang-24th-april-tickets-1987382622924?)💥*** Celebate spring and join us for a night of laughter with six stand-up comedians. Find out why we are the best Friday night comedy fix! Revolver features funny people from all over planet Earth. The show is hosted by Berlin’s favourite immigrant \~ [Rohit Bhatia.](http://%5Bhttps//%5Bwww.thebhatia.com/%5D%5D(www.thebhatia.com/%5D)(%5Bhttps://www.thebhatia.com/%5D(https://www.thebhatia.com/)) "\[\[https://www.thebhatia.com/\](https://www.thebhatia.com/)\](https://www.thebhatia.com/)") **Entry : 10 €.** The bar and the event is Cash only. No plastic. No smoking during the performances. Nice people only! Please do not transfer money over the internet. We do not sell tickets online, only reservations are taken. These reservations are held till 8.30 pm on the day of the show. **Doors : 8 pm** Revolver is an original and independent Berlin comedy mic. No gimmicks, no games, no donation scam. We have no branches, please be aware of cheap imitations. Revolver happens every Second and Last Friday of the month in Kreuzberg, Berlin.

Meet like-minded people, get authentic meditation instructions and hang out in our beautiful Buddhist meditation center in the west of Berlin! The practice of meditation is a simple, yet profound practice that helps us to connect with ourselves and gives us tools to release experiences of distraction, agitation, and stress. In the Buddhist tradition, meditation is more than just a way to end the mind´s distraction - it is what helps us to bring our mind home to its true nature. What better way to experience the colourful facets of meditation than with a group of like-minded people? Hence our open meditation sessions always have a social element as well - we like to have a tea and share about our meditation experiences, or whatever else we want to explore. There is also always the chance to ask questions to our experienced meditation instructors. These sessions are held in English and open to everyone - complete beginners as well as those with more experience. The sessions are every week on Friday at 17:00-18:30.

Übersicht Join us for Butterflies Garden – a fun day of planting and creating together in person! Butterflies Garden – Co-Creation & Planting Day Join us for the first step of the Butterflies Garden project (With the support of IUCN Save Our Species, co-funded by the European Union)! This is a fun, hands-on community day where we will: Co-design the garden together (ideas, plants, layout) Prepare the soil Plant the first flowers and host plants 💚 Everyone is welcome – no experience needed! 💚 Whether you are a gardener, nature lover, designer, insect enthusiast, artist, student, neighbour, or someone who enjoys working in community, your energy is valuable. Schedule: 10:00 – 12:30 → Collaborative design session (with coffee, mate & tea) 12:30 – 13:30 → Picnic / lunch break (bring something to share) 13:30 – 16:30 → Practical work: soil preparation + planting You can join for the morning, afternoon, or the full day. 📍Location: Dammweg 216, 12057 (Neukölln, Berlin) 📅Date: Sunday 26 April 2026 Free event – previous registration required: https://tiny.cc/wq02101 🌱 Join us in this collaborative experience and help grow a community around pollinator-friendly gardens!

!!! Note the corrected meeting spot, which for some reason keeps getting changed in the event: [https://maps.app.goo.gl/L8SuKJxoLLa8hXCdA](https://maps.app.goo.gl/L8SuKJxoLLa8hXCdA) \-\-\- **Mandarin Learner Meetup in Berlin! *(Free resources below)*** **Learning Mandarin is like trying to tame a** 🐲**.** It can feel frustrating, but you’re not alone. **[WeHanzi](wehanzi.com)** is here to support! **[WeHanzi](wehanzi.com)** is an independently built iOS app created by Ben and Gina. We've turned the entire learning experience into ***Comprehensible Input* through both simplified and traditional manga** with support for **Zhuyin**, **Pinyin**, **flashcards**, **audio**, **direct translation**, an integrated dictionary. We also specifically design region-specific language to reflect real-life usage in both **mainland Chinese Mandarin** and **Taiwanese Mandarin**, allowing you to naturally compare and explore the differences between the two, so you don’t end up saying something that makes perfect sense in Beijing, but gets you funny looks in Taipei 😏. Now, together with our good friend Matthias from **[Gemeinsam Chinesisch & Deutsch lernen](https://www.meetup.com/gemeinsam-mandarin-chinesisch-und-deutsch-lernen/events/308204343/?eventOrigin=group_upcoming_events),** we’re inviting you to our very first **in-person Mandarin Learner Meetup in Berlin** together! All levels are welcome, from beginners to advanced learners. Just come hang out, share your stories, laugh at our tone mistakes! As a community, we can learn from each other and turn Mandarin into a piece of cake! 🍰 **Come and join us!** 📱 App: [Wehanzi.com](https://wehanzi.com/) 📸 Free bite-sized resources: [Instagram](https://www.instagram.com/wehanzi/) 📚 More free tools: [wehanzi.app/menu](https://wehanzi.app/menu) **📍ABOUT THE MEETING SPOT** Please note that we will meet HERE, on the 3 wooden tree benches slightly left of the main entrance gate of Tempelhofer Feld: [https://maps.app.goo.gl/L8SuKJxoLLa8hXCdA](https://maps.app.goo.gl/L8SuKJxoLLa8hXCdA) We'll meet at the meeting spot first and then - depending on the weather - decide as a group to either walk around Tempelhofer Feld or go to a closeby restaurant to warm up and chat. So please be on time. Or if you are running late or can't find us, just give Matthias a call on 0176-21984345. See you all soon, Gina & Matthias

Join us for an afternoon of cultural exchange and German conversation practice at our Berlin Conversation Meetup Group event — complete with interesting chats and a beer or two at our local bar BrewDog Berlin Mitte. Connect with like-minded individuals who are passionate about language learning, culture, and community. Share your experiences, learn about different cultures, and engage in meaningful discussions across German language levels. From beginners to advanced levels, all learners and speakers of German are welcome! Whether you're a local resident or a curious traveler, this event promises to be a blend of fun, learning, and connecting with others who value the richness of cultural diversity and language learning. This event is hosted by the online language school lalia-berlin.com, helping German learners to overcome communication barriers and grow into confident speakers of German. Join us for this fun afternoon of practice and renew your motivation to break through to the next level in German! We use a [WhatsApp group](https://chat.whatsapp.com/CumRuFFzUWGF6jToK3GHIA?mode=wwt) where we share updates like the exact location and any last-minute info on the day of the event. **Feel free to join if you’d like to stay in the loop**: https://lalia-berlin.com/offline-events

This is a 3 phase meetup. You can come at any time. 1.) 6:45 -7:00 p.m.: Gathering at the meeting spot (see gmaps link!) 2.) 7:00 - 7:30 p.m.: Walk & Talk to the Kerb food court. 3.) 7:30 - 10:00 p.m.: Immerse conversations in the Kerb food court. 🪑: Reserved tables for the meetup. **1.) How to the find Quartier 205 Stadtmitte:** [https://goo.gl/maps/6Fhft3LbPhcEsQrdA](https://goo.gl/maps/6Fhft3LbPhcEsQrdA) The exact meeting spot can be seen in the photo below! We meet on the 1st floor where the trash sculpture can be seen. Look for a meetup sign or organizer wearing a black or red lanyard with "staff" written on it. **2.) Walk & Talk to the Kerb food court** The best part. In order to extend the walk we'll stroll all the way to Brandenburger gate and from there to the former Sony Center where we are going to enter the Kerb foodcourt. **3\. How to find the Kerb food court** [https://maps.app.goo.gl/xJTQg9oBoGL67syz7](https://maps.app.goo.gl/xJTQg9oBoGL67syz7) Kerb is located at the former Sony Center. The new flagship food court of Potsdamer Platz. Most likely we will be sitting upstairs on the first floor next to the bar (take the stairs to the left). ***Best ways to get there:*** 1\. U2 \(subway\): Get off at Potsdamer Platz and walk around 7 min to Kerb. 2\. Bus M41 or M85 Get off at Potsdamer Platz and walk 5 min to Kerb. *Who is this meetup for:* 1\. Internationals who want to practice German or any other language\. 2\. Germans who want to improve their language skills\. 3\. Anyone who is interested in cultural exchange and wants to socialize\. *What you can expect:* 1\. A professionally organized meetup that can adapt to any changes given the current situation\. 2\. A Walk & Talk to break the ice\. 3\. A collaborating venue where you can further socialize with other members\. *important:* This event is at the same time and meeting location like the "Asian Languages & Culture Exchange 🍜日本語, 한국어, 汉语🍥" one. So I'm basically organizing 2 events at the same time which means that you can expect way more people than on the list. *** Whenever you attend a meetup, the most common as well as first question you get is: "Where are you from?" You probably heard this question a million times. Well, at least I did. From my own experience of attending over 200 international meetups in various countries such as Germany, Japan, Australia and Thailand, I can tell you that asking for the name is a better approach. “A person’s name is to that person, the sweetest, most important sound in any language.” - Dale Carnegie If you really want to connect with like-minded people you should remember their name, but you don't have to remember every persons name you've talked you. Be picky about that, don't be me who can somehow remember everyones name easily. Don't tell yourself sth. like "I'm bad at remembering names." It's all about developing the habit of asking for a name and keep the conversation going on. Furthermore, you want to learn German or any other language. Learning the local language is crucial to connect with the locals and developing a true friendship. This can be accomplished with immersion. My goal is to inspire you to go out of your comfort zone and improve yourself each time you join this meetup.

We’re inviting you to a one-of-a-kind afternoon at one of Berlin’s coolest cafés, where you’ll level up your **language skills** in the most **fun and interactive way possible**. Watch our **[event teaser video](https://youtu.be/JpDDBC7KUQU)**. ​We’re talking **memes**, **quizzes**, and **creative challenges** that make mastering languages an experience, not a chore. 🎉 **What to Expect** * ​​**Interactive Learning 🧠:** Forget about traditional lessons. We’re diving into languages with **interactive games**, **meme-based learning**, and **real-life practice** that gets you talking, laughing, and learning in a way that sticks. * ​**Gen Z Vibes Only 🌟:** This isn’t your traditional language class. It’s built with our generation in mind—fun, engaging, and designed to keep you hooked. * ​**Community Vibes 🤝:** Do you want to improve your language but feel shy? Don’t worry – everyone here is focused on improving and learning together. **​** **When & Where** We meet every other **Saturday**, hopping from café to café in different **neighborhoods**. The exact location will be disclosed 24 hours before the event! 📅 **Why Join?** ​ This event is all about **putting your lanugage skills into practice** in a relaxed, social setting. You’ll not only improve your language but also discover some of the **best spots** the city has to offer. 🌍✌️ **Who Will join?** 8-10 Young Professionals & Students (this event is also being advertised on other platforms).

Preparing for the TELC B1 exam and not sure if you are ready? This intensive 2-day workshop (Saturday 25.04 and Sunday 26.04 ) will help you understand the exam format and learn practical strategies to improve your results. The workshop is led by an official TELC examiner, so you will receive useful insights and tips based on real exam experience. This workshop is ideal if you need a TELC B1 certificate: • for German citizenship (Einbürgerung) • for a residence permit (Aufenthaltstitel) • to officially confirm your German level for work • for Ausbildung or job applications • or if you simply want to pass the TELC B1 exam with confidence 👩🏻‍💼Format: 2 days × 3 hours 📆 Dates & Time: 25.04-26.04 (12:00-15:00) 📍 Location: MutterSprache Leila Berg / On-site in Berlin-Mitte 👥 Small group 💶 Price: 69 euros The workshop will be held in German. What we will cover: Listening (Hören) • How to understand exam audio tasks • Strategies for finding the correct answers • Typical exam traps • Practice with real TELC-style tasks Reading (Lesen) • How to find information quickly • Working with keywords and synonyms • Time-saving strategies • Practice tasks Writing (Schreiben) • Structure of a successful TELC B1 email • Useful phrases and templates • Common mistakes • Practical writing task during the workshop Speaking (Sprechen) • How the speaking exam works • What examiners expect • Useful phrases for the exam • Speaking practice in pairs Included: ✔ Clear overview of the TELC B1 exam ✔ Strategies for all exam parts ✔ Practical exercises ✔ Useful phrase lists ✔ Tips from an examiner ✔ Mini mock exam tasks

Meet, Match, MoveOn and Manage or Master Why Meet 1)Meet new People Culture Languages. 2)Not Match Romance, Political Views nor Religion, only Respect and Joy 3) Moveon, advance with your level, goals, and especially share and try Rotate the groups and let others participate a bit. 4) Master the challenges, and Manage to give a Like or appreciate the meetups!! **Thematic** or small Concept: Manage to Bring 2 German Friends and you get a Drink. if you bring your Ex Partner + 2 German friends =2 drinks = thats the Challenge and the Attitude of 2026

We meet to learn and practice American Sign Language and to grow our familiarity with Deaf culture. Facilitated by hearing folks (with a connection to a professional interpreter) using Deaf-created content. People of all ASL skill levels are welcome! As we learn, we hope to connect more with the Deaf community in Central Ohio. Join us as you're able! Come regularly or just once - whatever you're looking for! Each meetup will explore different topics related to ASL/Deaf culture, and will feature time to practice conversation with one another. Just bring yourself and a willingness to learn!

Let's grab some coffee/food and share a morning chat! The East Market has an ample parking lot and outdoor and indoor seating. Grab a cup of coffee from Winston's Coffee & Waffles or on your way to East Market and meet us on the second floor - table behind or east of the elevator. Per what this group is about: "Everyone is welcome! International transplants to Columbus who want to improve language skills, Columbus residents who want to discuss international travel and culture, and anyone who enjoys getting together for good conversations."

The aim of this group is to get together and practice our German. Doesn’t matter if are a beginner or a native speaker. The goal is to speak and improve our German. Everyone is welcome! If the weather is good, look for us in the Biergarten. Pro Tip: Get there before 6:00 for happy hour pricing.

Bienvenue! Columbus French Conversation group invites you to our Saturday morning French conversation club. Expect a casual and welcoming atmosphere in which to learn french! I will bring my laptop so we can look up new vocabulary as needed! The venue is a beautiful French restaurant so you can really get into the zone :)

This event is 2:30 - 4 pm Sunday. Conversation tends toward intermediate/advanced, but everybody is welcome. If you come and don't see us right away, keep looking. We could be anywhere in the restaurant.

Ciao a tutt\*! Let's meet Monday at 6.30pm at the Upper Arlington Library (Tremont Branch) in **Meeting Room A** to speak in Italian for 1 hour.

While some are still meeting online, this is an in person event. Please note that we have attendees of all levels of speaking, including some native speakers. All are welcome! Also, as we meet at the same time and place each week, many don’t RSVP on the app, so we will likely have more attendees than noted here. Note: if you are asked to pay and upgrade the Meetup app, this is not necessary. You can ignore this and still attend our meetings. Find us on our [Facebook group](https://www.facebook.com/share/g/1EKw86WJCp/?mibextid=wwXIfr).